package other;

public class is_unique_lcci {
    public static void main(String[] args) {
        String s="abc";
        for (int i=0;i<s.length();i++){
            for(int j=i+1;j<s.length();j++){
                if(s.charAt(i)==s.charAt(j)){
                    System.out.println(false);
                    return;
                }
            }
        }
        System.out.println(true);
    }

}
